Powder Burn Rate 101 — How to Read a Burn Rate Chart
7 min read
Burn rate is how reloaders talk about how fast a powder converts to gas once ignited. Faster powders build pressure quickly over a short distance — good for handguns and light rifle loads. Slower powders build pressure gradually — good for big magnum rifles where you want sustained push down a long barrel.
What a burn rate chart is — and what it isn't
A burn rate chart is a relative ordering. It tells you that Titegroup is faster than Unique which is faster than Power Pistol. It does not give you exact burn speeds (those depend on pressure, confinement, and temperature) and it does not mean adjacent powders are interchangeable. A position change of one or two spots on the chart can still represent a 10–15% pressure difference at the same charge weight.
Treat the chart as a map, not a recipe.
How to use a burn rate chart
- Pick your cartridge first.Different cartridges have different “sweet spots” on the chart. A 9mm Luger wants a fast pistol powder (Titegroup, HP-38, N320). A .308 Winchester wants a medium rifle powder (Varget, H4895, N140). A .300 Win Mag wants slow (H1000, Retumbo, N560).
- Find powders your load manual lists for that cartridge. Those are your safe starting points — someone at Hodgdon or Alliant has already pressure-tested them.
- Cross-reference with availability. The powder your manual calls for may be out of stock. Use the chart to find something close and cross-check your manual for data using the substitute.
- Never substitute by chart position alone.Drop 10% from max and work back up with chronograph data. The chart ordering doesn't guarantee the substitute will give matching pressure.
Single-base, double-base, and coated powders
Most modern reloading powders are double-base (nitrocellulose + nitroglycerin) — more energy per grain than single-base. Some temperature-stable powders (Hodgdon Extreme line: H4350, Varget, H4895, H1000, Retumbo) have special coatings that make their velocity less sensitive to ambient temperature. That matters if you shoot both summer and winter with the same load and care about velocity consistency.
Common sweet spots by cartridge
- 9mm / 40 S&W / 45 ACP: fast pistol powders — Titegroup, HP-38, Bullseye, Unique
- 223 Rem / 5.56 NATO: fast rifle — Varget, H335, BL-C(2), CFE 223, Benchmark
- 6.5 Creedmoor: medium-slow — H4350, Reloder 16, N555, IMR 4451
- 308 Winchester: medium — Varget, IMR 4064, N140, Reloder 15
- 300 Win Mag: slow — H1000, Retumbo, Reloder 22, N165
- 50 BMG: very slow — H50BMG, N570, Retumbo
Where to check live pricing
Our live burn rate chart shows every powder on the standard ordering with its current per-pound price and stock status across our retailers. Click any powder for the full price comparison.